1
22
23 package com.liferay.portal.security.auth;
24
25 import com.liferay.portal.NoSuchUserException;
26 import com.liferay.portal.SystemException;
27 import com.liferay.portal.kernel.util.StringPool;
28 import com.liferay.portal.kernel.util.StringUtil;
29 import com.liferay.portal.kernel.util.Validator;
30 import com.liferay.portal.model.User;
31 import com.liferay.portal.security.ldap.PortalLDAPUtil;
32 import com.liferay.portal.service.UserLocalServiceUtil;
33 import com.liferay.portal.util.PortalUtil;
34 import com.liferay.portal.util.PrefsPropsUtil;
35 import com.liferay.portal.util.PropsKeys;
36 import com.liferay.portal.util.PropsValues;
37
38 import edu.yale.its.tp.cas.client.filter.CASFilter;
39
40 import javax.naming.Binding;
41 import javax.naming.NamingEnumeration;
42 import javax.naming.directory.Attributes;
43 import javax.naming.directory.SearchControls;
44 import javax.naming.directory.SearchResult;
45 import javax.naming.ldap.LdapContext;
46
47 import javax.servlet.http.HttpServletRequest;
48 import javax.servlet.http.HttpServletResponse;
49 import javax.servlet.http.HttpSession;
50
51 import org.apache.commons.logging.Log;
52 import org.apache.commons.logging.LogFactory;
53
54
61 public class CASAutoLogin implements AutoLogin {
62
63 public String[] login(
64 HttpServletRequest request, HttpServletResponse response)
65 throws AutoLoginException {
66
67 String[] credentials = null;
68
69 try {
70 long companyId = PortalUtil.getCompanyId(request);
71
72 if (!PrefsPropsUtil.getBoolean(
73 companyId, PropsKeys.CAS_AUTH_ENABLED,
74 PropsValues.CAS_AUTH_ENABLED)) {
75
76 return credentials;
77 }
78
79 HttpSession session = request.getSession();
80
81 String screenName = (String)session.getAttribute(
82 CASFilter.CAS_FILTER_USER);
83
84 if (Validator.isNull(screenName)) {
85 return credentials;
86 }
87
88 User user = null;
89
90 try {
91 user = UserLocalServiceUtil.getUserByScreenName(
92 companyId, screenName);
93 }
94 catch (NoSuchUserException nsue) {
95 if (PrefsPropsUtil.getBoolean(
96 companyId, PropsKeys.CAS_IMPORT_FROM_LDAP,
97 PropsValues.CAS_IMPORT_FROM_LDAP)) {
98
99 user = addUser(companyId, screenName);
100 }
101 else {
102 throw nsue;
103 }
104 }
105
106 credentials = new String[3];
107
108 credentials[0] = String.valueOf(user.getUserId());
109 credentials[1] = user.getPassword();
110 credentials[2] = Boolean.TRUE.toString();
111
112 return credentials;
113 }
114 catch (Exception e) {
115 _log.error(e, e);
116 }
117
118 return credentials;
119 }
120
121 protected User addUser(long companyId, String screenName)
122 throws SystemException {
123
124 try {
125 String baseDN = PrefsPropsUtil.getString(
126 companyId, PropsKeys.LDAP_BASE_DN);
127
128 LdapContext ctx = PortalLDAPUtil.getContext(companyId);
129
130 if (ctx == null) {
131 throw new SystemException("Failed to bind to the LDAP server");
132 }
133
134 String filter = PrefsPropsUtil.getString(
135 companyId, PropsKeys.LDAP_AUTH_SEARCH_FILTER);
136
137 if (_log.isDebugEnabled()) {
138 _log.debug("Search filter before transformation " + filter);
139 }
140
141 filter = StringUtil.replace(
142 filter,
143 new String[] {
144 "@company_id@", "@email_address@", "@screen_name@"
145 },
146 new String[] {
147 String.valueOf(companyId), StringPool.BLANK, screenName
148 });
149
150 if (_log.isDebugEnabled()) {
151 _log.debug("Search filter after transformation " + filter);
152 }
153
154 SearchControls cons = new SearchControls(
155 SearchControls.SUBTREE_SCOPE, 1, 0, null, false, false);
156
157 NamingEnumeration<SearchResult> enu = ctx.search(
158 baseDN, filter, cons);
159
160 if (enu.hasMoreElements()) {
161 if (_log.isDebugEnabled()) {
162 _log.debug("Search filter returned at least one result");
163 }
164
165 Binding binding = enu.nextElement();
166
167 Attributes attrs = PortalLDAPUtil.getUserAttributes(
168 companyId, ctx,
169 PortalLDAPUtil.getNameInNamespace(companyId, binding));
170
171 return PortalLDAPUtil.importLDAPUser(
172 companyId, ctx, attrs, StringPool.BLANK, true);
173 }
174 else {
175 throw new NoSuchUserException(
176 "User " + screenName + " was not found in the LDAP server");
177 }
178 }
179 catch (Exception e) {
180 _log.error("Problem accessing LDAP server ", e);
181
182 throw new SystemException(
183 "Problem accessign LDAP server " + e.getMessage());
184 }
185 }
186
187 private static Log _log = LogFactory.getLog(CASAutoLogin.class);
188
189 }